Antislipping device for skids



R. FRiEDLEY Aug. 5 1924;.

ANTISLIPPING DEVICE FOR SKIDS E U e N F ll- P E 5 Filed Nov. 9, 1922 Patented Aug.

ROBERT FRIEDLEY, OF EDMONTON, ALBERTA, CANADA.

ANTISLIPPING DEVICE FOR SKIDS.

Application filed November l), 1922.

To all whom it may concern-.-

Be it known that I, ROBERT FRmnn-EY,

a subject of the King of Great Britain,

residing at'Edmonton, in the Province of Alberta and Dominion of Canada, have invented certain new and useful Improvements in Antislipping Devices forSkids, of which the following is a specification.

This invention relates to improvements in skids to facilitate the handling of timber and the like.

The primary object of this invention is the provision of an improved anti-slipping arrangen'ient for the skids of guide ways, which will facilitate the handling of lumber and other articles upon the skids by reason of calk members which are adapted for en gaging the lumber or articles being moved over the skids.

A further object of this invention is the provision of an improved anti-slipping device, and retaining means for detachable assemblage to skids, such as logs, whereby an efiicient skid may be provided for use in connection with the decking of logs, or for use in connection with the handling of other materials.

A further object of this invention is the provision of an improved anti-slipping skid 0 chain embodying a novel assemblage of calked links.

Other objects and advantages of this in vention will be apparent during the course of the following detailed description.

In the accompanying drawing, forming a part of this specification, and wherein similar reference characters designate corresponding parts throughout the several views,

Figure 1 is a perspective view of a pair ping devices, showing the skids in the arrangement which they ordinarily assume to facilitate the decking of logs.

Figure 2- is a perspective view of the upper end of the improved anti-slipping device for skids.

Figure 3 is a bottom plan view, partly in section, of a link element embodied in the improved anti-slipping chain.

Figure 4: is a side elevation of a link embodied in the improved anti-slipping clrain.

Figure 5 is a transverse cross sectional view, taken substantially on the line 5-5 of Figure 3.

y In the drawing, wherein for the purpose of skids embodying the improved anti-slip- Serial No. 599,827.

of illustration is shown but the preferred embodiment of this invention, the letter A generically indicates the manner in which logs or timber is arranged in tiers by means of skids B. In connection with the skids B, novel anti-slip devices C are employed to facilitate the moving of the logs along the skidway, B, said means C preferably being a chain formed of a plurality of novel link members D. I

In arranging the 10 's, lumber jacks re sort to the use of skids, which ordinarily comprise two pieces of timber shaped so that the same may be diagonally braced against the upper tier of a pile of timber. Logs are then rolled or drawn over the skids to form succeeding tiers. The operation of sliding or drawings the logs over the skids is not easy. In winter time, when logging is most generally carried on, the skids become slippery, incident to wearing of the ark off the skids and formation of ice. It can thus be readily understood that drawing of the logs over the skids is rendered very difficult, very often resulting in accidents, as by lateral or longitudinal slipping of the logs on the skids. By the use of the improved anti-skid chains C, and their incidental connecting parts, the skids B can be utilized to render a log piling operation comparatively easy, under various circumstances.

eferring to the skids B, the same may be of any approved construction, ordinarily being the shape of specially cut timber, having the upper ends thereof recessedas at 10 to conform to the curvature of a log 11, on the upper tier of the logs being piled. Generally, the skids B are tapered toward their lower ends 12, and especially at the bottom surface 13 adjacent said lower ends 12.

Referring to the links Bof the anti-skid chain C, each of said links is substantially U-shaped in formation, including leg or arm portions 15 and 16, which are connected by a bight or transverse portion 17 at an end of each. The arms 15 and 16 are of peculiar formation, preferably having top and bottom flat surfaces 18 and 19 respectively. These arms 15 and 16 are preferably poly'g onal in cross section and at their free ends are offset, so. that the space intermediate the inside or facing edges of said arms 15 and 16 is relatively wide to permit the insertion of the connecting portion 17 of the next adjacent link. The arms 15and 16, moreover, are provided with the bulge or reinforcing portion 20, at the free ends thereof, prefer.- ably depending from the lower surface 19, which cooperates with the skid B in maintaining the links D in proper. manner.

The top surfaces 18 of the link arms 15 and 16 are preferably provided.\viththe upwardly extending conical shaped calks 25, which are preferably disposed in a reinforced portion substantially midway oft-he endsof each of said arms 15 and 16. On these top surfaces 18, the arms 15' and 16 are each preferably provided with the out- Wardly, extending pyramidal shaped calks 26, which-may be disposed adjacent the free ends of said arms, substantially as is illustrated in Figures 2 and 4; of the drawing.

These calks and 26 are thusarranged substantially at right angles to theplanedefined by the link D, and are pointed so that the same may'engage-a log or other article, as will be subsequently mentioned. The

; lowersurfaces- 19 of the link arms 15 and 16 are each preferably provided with a pyramidal shaped calk 28, which extends substantially atrightangles tothe plane defined by the-links on which they are positioned, the same extending directly opposite to the calks 25. It is preferred that the facing-surfaces -30 of these calks 28 be sub stantially perpendicular to the plane defined by the links D or slightly canted, the

purpose of such construction being that of preventionofalateral slipping of the links D,- as the calks QSareadapted forbiting into the materialofthe skids B, as will be hereinafter mentioned. It is preferred that a r .tl1e-relativellon -transverse recess or assageway which extends through the bight or connecting portion 17. The free ends of the arms 15 and16 are likewise provided with the aligning transverse passageways-371 The connecting portion 17 ofone link is adapted fonassemblage in thespace intermediate the-arms 15 and '16 of an adjacent link, so that the passageway -35 of the connection 17 aligns with the passageways 3'? ofth'e arms 15 and 16 of said adjacent link. In, this position, the adjacent linksmay bepivotally connectedby means of'a pin-or pintle 'member139; which may be riveted or detachably connected toefl'ect the pivoting; of saidlinks D."- Inthis manner, the chain G an outwardly extending hook 14i which isprovided with a pointed end 45'. In the placing of the chain C upon-the skid'B, the

hooked end 44; and particularly the pointed end 45thereof, digs into the upper end sur-' face of the skid B, so that the chain C is prevented from downward longitudinal movement along the skid B, as can be readily understood. In order to laterally reinforce and stabilize the upper end of: the

chain C, it is preferred to provide spike ele- V ments L7 upon each outwardly extending endof the pin 41, as by links or a chain ele: ment48; said spikes L7 being adapted for driving engagementwithin the skid B or log A, and thus preventing'any lateral movement of the yoke member 10.

The links D of the chain C are placedupon the skid B, and the calks 28- and 31 bite or engage, as by hammering, into the material of the skid B, so that each linkD=is fixedly connected'to the skid B in-a simple and effective manner, against liability. of

longitudinal or lateral displacement. To obviate any liability of displacement of the links D achain E has been provided, which is connected as by its upper link-5O through;

an aperture 51in an end of the yoke 40. The chain E is spirally wrapped about the skid B and about the various links D, so thatthe link elements of the chain E engage over the conical shaped calks 25; It can thus be understood that by such spiralwrapping of the chain'C, each link D is additionally se cured to the skid B by reason of engagement of said chain E'o-ver-the--conical shaped calks-25. The lower end ofthe chain E may be wrapped or secured in any approved ma n nor to the lower endof the skid B, as by fastening to lower pintle 39.

The skid B' may, of course, be of any length, and the linksD may be of any number consistent with the length of the skid B.

In order to facilitate handling ofthe chain C, it is preferred that for a relatively long skid B, the chain C be made in sectionsand detachably connected, as by means of making certain of the pintle elements 39 detachable.

From the foregoing description of this invention,.it can be seen-that a relatively stand the rough handling and severe strains imposed upon the same incident to log piling.

It can readily be understood that the calks 25 and 26 will prevent any logs from sliding backward over the inclined skids B, and will thus prevent accident. Lateral as well as longitudinal slipping of the logs is insured against. The improved chain C may be readily detached from one skid and assembled to another skid. It is also contemplated to make the various calk elements of the links detachable since upon wearing out of said links it might be desirable to supply a new calk in lieu of entirely new links.

Various changes in the shape, size and arrangement of parts may be made to the form of invention herein shown and described, without departing from the spirit of this in vention or the scope of the claims.

I claim:

1. I11 a logging guideway, the combination of a skid member, an anti-slip chain for said skid member, and means for attachment of said anti-slip chain to said skid member.

2. In a device of the class described, the combination of a skid member, an anti-slip chain includingcalk portions thereon, and means for detachably aflixing said anti-slip chain to said skid member.

3. As an article of manufacture, an antislip link having calks extending outwardly from opposite sides thereof.

4. As an article of manufacture, an antislip link having calk members extending laterally on opposite sides of the plane defined by said link.

5. As an article of manufacture, an antislip link of substantially U-shape includingarm portions and a connecting bar portion, said arm portions having calks extending outwardly of a side thereof.

6. As an article of manufacture, an antislip link including arm portions, and a connecting bar portion for said arm portions, of substantially U-shaped formation, said arm portions having calks extending outwardly of the plane in which the same lie on opposite sides thereof.

7. As an article of manufacture, a link element for anti-slip chains of substantially U-shaped formation including arm portions and a connecting portion rigidly aflixed to an end of each of said arm portions to provide a substantially U-shaped structure, opposite sides of said arm portions being relatively flat and provided with pointed calk elements extended outwardly at right angles to the plane defined by said link arms and connecting portion, said connecting portion having a calk member extending outwardly to one side of said link.

8. As an article of manufacture, an antislip chain having pointed calks extending outwardly from opposite sides thereof.

9. In a device of the class described, the combination of a skid member, an anti slip arrangement including a hooked member adapted for engagement over the upper end of said skid member so that the antislip arrangement extends longitudinally along the upper surface of said skid member, and means for spiking said anti-slip arrangement to said skid member throughout the length thereof.

10. In a device of the class described, the combination with a timber skid, of an antislip chain including a plurality of links having calks extending outwardly therefrom in opposite directions, the calks on one side of said anti-slip chain being adapted for biting into the timber skid so that the calks on the other side of said chain extend up wardly of said skid member, and hook means on the end of said anti-slip chain adapted for biting into the upper end of said skid member.

11. In a device of the class described, the combination of a timber skid, an anti-slip chain including a plurality of links each having calk elements extending outwardly from opposite sides thereof, the calks on one side of the chain being adapted for biting relation with the skid so that the calks on the other side extend outwardly of said skid, means on the upper end of said antislip chain fixedly secured to the upper end of said skid, and a chain member adapted for spiral winding about said antislip chain and said skid to engage certain calks which extend upwardly from said skid.

12. In combination with a timber skid, of an anti-slip chain formed of a plurality of pivotally connected substantially U- shaped links, each of said links having pointed calk members extending outwardly from opposite sides thereof, the calks extending from one side of said chain being adapted for biting relation into the material of said timber skid so that the calks on the other side of the chain extend outwardly of said skid, a yoke member pivotally connected to the upper end of said chain having a hook extending outwardly thereof adapted for biting engagement inwardly of the end surface of said skid to prevent downward longitudinal movement of the anti-slip chain upon said skid, means for affixing said yoke and the upper end of said chain against lateral movement upon said skid, and means wound about said skid and said chain engaging certain upstanding calks in the links of said chain and adapted for securing said chain against displacement from said skid.

ROBERT FRIEDLEY. 

